<template>
  <view class="my-settle-container">
    <!-- 全选区域 -->
    <label class="radio" @click="changeAllState">
      <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
    </label>
  
    <!-- 合计区域 -->
    <view class="amount-box">
      合计:<text class="amount">￥{{checkedGoodsAmount}}</text>
    </view>
  
    <!-- 结算按钮 -->
    <view class="btn-settle" @click="settlement">结算({{checkedCount}})</view>
  </view>
</template>

<script>
  import { mapGetters, mapMutations, mapState } from 'vuex'
  
  export default {
    
    name:"my-settle",
    data() {
      return {
        seconds: 3,
        timer: null
      };
    },
    computed: {
      ...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']),
      ...mapGetters('m_user', ['addstr']),
      ...mapState('m_user', ['token']),
      ...mapState('m_cart', ['cart']),
      isFullCheck() {
        return this.total === this.checkedCount
      }
    },
    methods: {
      ...mapMutations('m_cart', ['updateAllGoodsState']),
      ...mapMutations('m_user', ['updateRedirectInfo']),
      changeAllState() {
        this.updateAllGoodsState(!this.isFullCheck)
      },
      
      // 点击了结算按钮
      settlement() {
        // 判断是否勾选了要结算的商品
        if (!this.checkedCount) return uni.$showMsg('请选择要结算的商品！')
        // 判断用户是否选择了收货地址
        if (!this.addstr) return uni.$showMsg('请选择收货地址！')
        // 判断用户是否登录了
        // if (!this.token) return uni.$showMsg('请先登录！')
        if (!this.token) return this.delayNavigate()
        
        // 实现微信支付功能
        this.payOrder()
      },
      
      // 微信支付
      async payOrder() {
        // 1. 创建订单
        const orderInfo = {
          // 开发期间，注释掉真实的订单价格，写死订单总价为 1 分钱
          // order_price: this.checkedGoodsAmount,
          order_price: 0.01,
          consignee_addr: this.addstr,
          goods: this.cart.filter(x => x.goods_state).map(x => ({ goods_id: x.goods_id, goods_number: x.goods_count, goods_price: x.goods_price }))
        }
        const { data: res } = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo)
        if (res.meta.status !== 200) return uni.$showMsg('创建订单失败！')
        const orderNumber = res.message.order_number
      
        // 2. 订单预支付
        const { data: res2 } = await uni.$http.post('/api/public/v1/my/orders/req_unifiedorder', { order_number: orderNumber })
        if (res2.meta.status !== 200) return uni.$showError('预付订单生成失败！')
        const payInfo = res2.message.pay
      
        // 3. 发起微信支付
        // 调用 uni.requestPayment() 发起微信支付
        const [err, succ] = await uni.requestPayment(payInfo)
        if (err) return uni.$showMsg('订单未支付！')
        const { data: res3 } = await uni.$http.post('/api/public/v1/my/orders/chkOrder', { order_number: orderNumber })
        if (res3.meta.status !== 200) return uni.$showMsg('订单未支付！')
        uni.showToast({
          title: '支付完成！',
          icon: 'success'
        })
       },
      
      // 延时导航到my界面
      delayNavigate() {
        this.seconds = 3
        this.showTips(this.seconds)
        // 创建定时器，每隔 1 秒执行一次
        this.timer = setInterval(() => {
          this.seconds--
          
          if (this.seconds <= 0) {
            clearInterval(this.timer)
            uni.switchTab({
              url: '/pages/my/my',
              // 页面跳转成功之后的回调函数
              success: () => {
                this.updateRedirectInfo({
                  openType: 'switchTab',
                  from: '/pages/cart/cart'
                })
              }
            })
            return
          }
          
          this.showTips(this.seconds)
        }, 1000)
      },
      
      // 展示倒计时的提示消息
      showTips(n) {
        uni.showToast({
          icon: 'none',
          title: '请登录后再结算！' + n + ' 秒后自动跳转到登录页',
          // 为页面添加透明遮罩，防止点击穿透
          mask: true,
          duration: 1500
        })
      }
    }
  }
</script>

<style lang="scss">
  .my-settle-container {
    /* 底部固定定位 */
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 5px;
    font-size: 14px;
    
    .radio {
      display: flex;
      align-items: center;
    }
    
    .amount {
      color: #c00000;
    }
    
    .btn-settle {
      height: 50px;
      min-width: 100px;
      background-color: #c00000;
      color: white;
      line-height: 50px;
      text-align: center;
      padding: 0 10px;
    }
  }

</style>